Introducing GB Switches Slowed down transfers ?!?

Statto101

Statto101

Statto101

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Location
London
Looking for help with Network speeds.

I have a router 10/100 which is then connected to powerline 200 network.
Off the power line network I have two GB Switches
One with a PC1 and other items attached
One with PC2 / SKYBOX / NAS attached.

My speed between PC1 and the NAS is 5MB/s not great but an improvement of not having the Switchs.

But my PC to PC has dropped to 100 KB/s ??? from 2MB/s before switches

I am running Bitdefender on both PC's could the AV be effecting the PC to PC?

Or is there something else I need to look at?

(If I understand all this my powerline max speed is 25MB/s but I am nowhere near that)

Thanks Statto
 
Yes Power line

room1 - Router into Powerline
room2 - Powerline in to GB Switch then PC1
room3 - powerline in to GB Switch then PC2 and NAS
 
Okay if I take out the powerlines I get the following
PC1 to NAS 8MB/s
PC1 to PC2 2MB/s

If the Powerlines go back to
PC1 to NAS 2-5MB/s
PC1 to PC2 150KB/s

So I guess my Powerlines are slowing it down, but even so I would expect a faster speed. when the router is out of the equationand the GB switches are directly linked..
 
Those PC to PC speeds are ridiculously slow! Gigabit between two PCs should give you 60MB/sec+. If it's working properly you be getting 90MB/sec+ without much trouble.

Even if they've dropped down to 100Mb/sec you should be getting 12MB/sec.

Either something is broken, or there's a software problem.
 
Check that all the devices connected to the GB switches are forced to 1000-Full duplex. edit: And force the ports on your router to their highest speed + full duplex.

Check the MTU/Frame size on all devices, normally set to something like 1500.

Do a pathping between the PCs and each other and then PCs to the NAS and look for lost packets and how many hops/what route.

I'm wondering if you're either dropping packets due to miss matched duplex settings etc, or all the traffic is going over the powerline to the router and then back out, rather than direct.
 
I forced both PC to 1000 Full duplex and now get 8MB/s transfer between the PCs.

The Switches are un-managed ones tl-sg1005d
The MTU is just below 1500 on the PCs.
I am not losing any data on my path pings either.

next I need to remove the router from the equation i guess.
 
Statto101 said:
I forced both PC to 1000 Full duplex and now get 8MB/s transfer between the PCs.

The Switches are un-managed ones tl-sg1005d
The MTU is just below 1500 on the PCs.
I am not losing any data on my path pings either.

next I need to remove the router from the equation i guess.
Click to expand...

Sounding better.

I see you forced the ports on the PCs, did you check the router and NAS as well?
I can do on mine here, though with the router I do need to telnet into it rather than being able to do it through the browser interface.

And what did the route look like on the pathpings, number of hops?
 
The route looked direct from one pc to the other - ie the router didn't get a meantion.

The switches are unmanaged so i am not sure if i can access them, and I have no idea how to "telnet": any guidance appreciated....
 
Statto101 said:
The route looked direct from one pc to the other - ie the router didn't get a meantion.

The switches are unmanaged so i am not sure if i can access them, and I have no idea how to "telnet": any guidance appreciated....
Click to expand...


Forget the switches, like you say they are unmanaged. but you should be able to manage the router and nas. normally you can do a certain amount of config by putting their IP address into your browser, might need a specific port as well.

if you are on vista, or later, you'll probably need to install the Telnet client before you can use it but it can easily found in the add windows features. once installed just open a cmd window and type


Telnet 192.168.0.1

or what ever the IP of your router is.

I can't access this forum from work so am posting from my phone and depending what router and nas you have the options and methods you might have are going to be different, so can't do much more than nudge you in the right direction at the moment. but post the model numbers if poss and I'll try and take a look later.
 
Reading again it seems to me that the traffic is going via the [10/100] router for whatever reason. Put static IPs on all devices, remove the router and then test again.
 
Okay will try and test without the Router.
(Switch is TP Link TL-SG1005D)
Off to watch the RUgby in the Pub so will have to test tomorrow.
 
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